109 lines
3.7 KiB
Go
109 lines
3.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package polls
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import (
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"context"
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"errors"
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"github.com/superseriousbusiness/gotosocial/internal/ap"
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/id"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
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)
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func (p *Processor) PollVote(ctx context.Context, requester *gtsmodel.Account, pollID string, choices []int) (*apimodel.Poll, gtserror.WithCode) {
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// Get (+ check visibility of) requested poll with ID.
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poll, errWithCode := p.getTargetPoll(ctx, requester, pollID)
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if errWithCode != nil {
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return nil, errWithCode
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}
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switch {
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// Poll author isn't allowed to vote in their own poll.
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case requester.ID == poll.Status.AccountID:
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const text = "you can't vote in your own poll"
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return nil, gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
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// Poll has already closed, no more voting!
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case poll.Closed():
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const text = "poll already closed"
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return nil, gtserror.NewErrorUnprocessableEntity(errors.New(text), text)
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// No choices given, or multiple given for single-choice poll.
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case len(choices) == 0 || (!*poll.Multiple && len(choices) > 1):
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const text = "invalid number of choices for poll"
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return nil, gtserror.NewErrorBadRequest(errors.New(text), text)
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}
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for _, choice := range choices {
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if choice < 0 || choice >= len(poll.Options) {
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// This is an invalid choice (index out of range).
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const text = "invalid option index for poll"
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return nil, gtserror.NewErrorBadRequest(errors.New(text), text)
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}
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}
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// Wrap the choices in a PollVote model.
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vote := >smodel.PollVote{
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ID: id.NewULID(),
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Choices: choices,
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AccountID: requester.ID,
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Account: requester,
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PollID: pollID,
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Poll: poll,
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}
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// Insert the new poll votes into the database.
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err := p.state.DB.PutPollVote(ctx, vote)
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switch {
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case err == nil:
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// no issue.
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case errors.Is(err, db.ErrAlreadyExists):
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// Users cannot vote multiple *times* (not choices).
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const text = "you have already voted in poll"
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return nil, gtserror.NewErrorUnprocessableEntity(err, text)
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default:
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// Any other irrecoverable database error.
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err := gtserror.Newf("error inserting poll vote: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Before enqueuing it, increment the poll
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// vote counts on the copy attached to the
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// PollVote (that we also later return).
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poll.IncrementVotes(choices)
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// Enqueue worker task to handle side-effects of user poll vote(s).
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p.state.Workers.Client.Queue.Push(&messages.FromClientAPI{
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APActivityType: ap.ActivityCreate,
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APObjectType: ap.ActivityQuestion,
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GTSModel: vote, // the vote choices
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Origin: requester,
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})
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// Return converted API model poll.
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return p.toAPIPoll(ctx, requester, poll)
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}
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